I have a feeling that if they had only been casually dating at the time, then the LW wouldn't have been so upset. How hard would it have been for the guy to be honest with her and to have said, "I'm not really into having kids; let's just keep this casual. I am seeing other people, so I don't care if you do the same thing." You may respond that these aren't the types of things that people usually say to each other. But if someone can't be honest about things like that, then they don't need to be sleeping with that person anyway. And a person who acts untrustworthy in the small things can't be trusted with great things, either, like being married. I have been hesitant to date certain people as well, but a wise person doesn't post things on a public forum and then tell their wife "my username is blank and I use X forum."